Ulmers clutch kit "H" helix angle?

[MDGFLHR]

Anyone know the angle of the H marked helix that came in the Ulmer Racing clutch kit for the Apex? Thanks

 

[Stubbs]

Any Ulmer kit I’ve seen has either come with a “G” or a “K” helix, depending on track length.
We’re not talking about a kit for an Apex Mountain are we? Maybe Al uses an “H” in that application?

 

[yamhaattakman]

....interested in finding out also. I herd ulmer sent put different helix for heavier riders

 

[Stubbs]

I can be accurate with these two......

“G” = 52-44 Typically used for 121/128

“K” = 49-41 Typically used for 136/144

Both of these are progressively cut multi-angle helixes. Keep in mind these are cut VERY aggressive. They load the motor harder than other brands of helixes with the same angles.